Dental surgical instrument



J. H. TAYLUR.

DENTAL SURGICAL INSTRUMENT.

APPLICATION FILED oc'T. 25. 1920.

Patented Jan. 31, 1922.

Specification of Letters Patent.

y Application filed October 25, 1920. Serial No. 419,20,

ToaZZ whom t may concern l Be it known that I, JAMES H. TAYLOR, acitizen of the United States, residing at Owensboro, in the county ofDaviess` and State of Kentucky, have invented certain new and usefulImprovements in Dental Surgcal Instruments, of which the following is aspecication.

This invention relates to dental surgical instruments and moreparticularly to an instrument designed for use in the operation ofcutting away the bony process in which a malerupted molar has becomeimpacted.

The object of the invention is to provide an instrument which may beconveniently manipulated without liability of injury to the patient andwhich will operate to smoothly cleave or cut away the portionV of thebony process of the superior'-maxillary which has rown over the sides ofthe malerupted mo ar, and by the use of which instru ment this portionof the bony process may by a single operation be cut away and removedlpaving a smooth surface which will quickly eal.

In the accompanying drawings:

Figure 1 is a side, elevation of one of the instruments embodying theinvention, the view illustrating the manner in which the invention is tobe employed in cutting away the bony process embedding the sides of theupper lefty third molar;

. Figure 2 is a top plan View illustrating an instrument which is to beemployed at the left hand side of the mouth. Y

Figure 3 is a top plan view of the instrument which is to be employed atthe right hand side of the mouth;

Figure 4 is a frontend elevation of the instrument, a portionV of theblades being shown in section.

The instruments shown in Figures 2 and 3 of the drawings arestructurally identical, the only difference being that one is adaptedfor use at the left hand side of the mouth. and the other at the righthand side of the mouth and therefore the specific description Y which isto follow will apply equally well to meral 1 and the otherby the numeral2,

which members are disposed in crossed rela- Patenjted Jan. 31, 1922.v

tion at their forward portions and connected by means of a pivot screw3, the members 1 and 2 being provided with handle portions 4 and 5respectively which may be knurled and suitably shaped to provide formost convenient manipulation of the instrument.

Forwardly beyond the pvot 3, the member 1 is extended laterally asindicated by the numeral 6, and thence upwardly and inwardly to providea blade which is indicated in general by the numeral 7 The outer side ofthis blade istransversely and longitudinally curved and smooththroughout as in-l dicated by the numeral 8 whereas the inwardlypresented sidev of the Vblade is transversely and longitudinally concaveas indicated by the numeral 9, the side and lower edge portions of theblade being sharpened to providey a cutting edge 10.

The member 2, forwardl beyond the pivot 3, is extended outwardlyaterally as at 11, and thence upwardly and inwardly to provide a bladeindicated b-y the numeral 12, this blade having the same form as theblade 7. By reference to Figures 1, 2 and 3 of the drawings it will beobserved that the blades 7 and 12 Vhavetheir concave faces presentedtoward each other. l

By reference to Figure 1, which figure illustrates the manner of usingone of the in- ,strumenta it will be observed that the molar A ismalerupted and that as a result of the sov maleruption a portion of themaxillary G' l has grown 'over the sides of the molar, this being theupperleft third molar. In order to permit of this impacted molar beinglifted l from its impression inthe inferior maxillary, it is necessarythat the portions of the bony process which embed the molarbe cut awayand this is vaccomplished by the use of the -V v Vinstrument shown inFigure 1, the instru` ment shown, inv Figure 2 being employed where aysimilar condition exists in the casey of the upper right third molar. Inthe use of the instrument thesameis-so disposed that the concave facesof the blades 7 and 12 will be positioned'at opposite sides of the molarA and then by bringing pressure to bear against the handles 4 and 5,theblades- 7 and 12 will'bel caused to cut through or' cleave the bonyprocess which embeds the respective sides of the said molar.

Rearwardly of the pivot 3, the members 1 and 2 are provided withshoulders 14 which erally curved in opposite directions and then coactto limit therpivotal movement of the laterally curved inwardlytowardeach other, 10 members to bring the blades together. the oposing'faces of the laterally inwardly Having thus described the invention,what curved portions of the extensions being 5 is claimed as new is:formed with cutting edges presented toward A dental surgical instrumentcomprising a each other. pair of pivoted handle membersfprovidedlntestimony whereof I affix my signature. 15 forwardly of their pivotwith extensions lat- Y JAMES H. TAYLOR. [L 5.]

